­Rush and the team reopen the case of the 2005 murder of Dex Collins, a young, black, up-and-coming politician, running to oust the incumbent for a seat on the City Council. His promise was to clean up the lower class neighborhood he grew up in, ridding them of the drug dealers who prey on children; but when he was gunned down, they found vials of crack on him, leaving his supporters feeling betrayed.

Reexamining Dex's life, leads our cops to several surprising suspects including the corrupt incumbent City Councilman who feared not being reelected; his campaign manager who seemed like she would do anything to get him elected, but was spurned by him romantically; childhood friends who became drug dealers and don't like Dex's attitude; even his supporters who didn't think Dex stood up enough.